Overview
This article details a critical Remote Code Execution (RCE) vulnerability, identified as CVE-2025-63220, affecting the web-based management interface of Sound4 FIRST devices. This vulnerability allows an attacker to execute arbitrary code on the device by exploiting a flaw in the firmware update mechanism.
Technical Details
The vulnerability stems from the inadequate validation of the firmware update package. Specifically, the system fails to verify the integrity of the manual.sh script within the update package. By modifying this script and repackaging the firmware, an attacker can inject arbitrary commands that will be executed during the update process. This allows for full control over the compromised device.
The attack vector involves crafting a malicious firmware update package containing a modified manual.sh script. When the device attempts to install this compromised update, the attacker’s injected code will be executed with the privileges of the update process, potentially granting root access.
CVSS Analysis
At the time of writing, a CVSS score has not been assigned to CVE-2025-63220. The severity is marked as N/A. However, considering the potential for Remote Code Execution, the vulnerability is likely to be classified as critical or high severity once a CVSS score is determined. A successful exploit would allow an attacker to completely compromise the affected Sound4 FIRST device.
Possible Impact
The successful exploitation of CVE-2025-63220 could have significant consequences, including:
- Full Device Compromise: Attackers gain complete control of the Sound4 FIRST device.
- Data Theft: Sensitive data stored on the device could be accessed and exfiltrated.
- Malware Installation: The device could be used as a foothold for spreading malware to other systems on the network.
- Service Disruption: The device could be rendered unusable, disrupting critical audio processing workflows.
- Supply Chain Attacks: Compromised devices could be used to launch attacks against other devices or systems connected to the same network.
Mitigation and Patch Steps
Until an official patch is released by Sound4, the following mitigation steps are recommended:
- Monitor Network Traffic: Closely monitor network traffic to and from Sound4 FIRST devices for any suspicious activity.
- Restrict Access: Limit access to the web-based management interface to only authorized personnel and networks.
- Strong Passwords: Enforce strong and unique passwords for all user accounts on the device.
- Firewall Rules: Implement firewall rules to restrict inbound and outbound connections to the device.
- Stay Informed: Regularly check the Sound4 website for updates and security advisories.
Check the Sound4 downloads page regularly for firmware updates addressing this vulnerability. Immediately apply any available patches.
References
- CVE: CVE-2025-63220
- Vulnerability Research: GitHub Repository
- Sound4 Helpdesk: Sound4 Helpdesk
- Sound4 FIRST Downloads: Sound4 FIRST Downloads
